- Dams, waterways, docks, and other marine construction (15)
- Caisson drilling (22)
- Canal construction (1)
- Dam construction (11)
- Dock construction (2)
- Drainage system construction (25)
- Dredging contractor (4)
- Irrigation system construction (23)
- Marine construction (3)
- Pond construction (23)
- Waterway construction (6)
- Railroad and subway construction (3)
- Railroad and railway roadbed construction (9)
- Athletic and recreation facilities construction (3)
- Athletic field construction (2)
- Golf course construction (20)
- Tennis court construction (8)
- Land preparation construction (41)
- Land leveling (6)
- Land reclamation (9)
- Rock removal (1)
- Timber removal (7)
- Industrial plant construction (12)
- Chemical plant and refinery construction (3)
- Mine loading and discharging station construction (4)
- Oil refinery construction (3)
- Waste disposal plant construction (2)
- Waste water and sewage treatment plant construction (19)
- Blasting contractor, except building demolition (14)
- Earthmoving contractor (49)
- Land clearing contractor (17)
- Pile driving contractor (5)
- Power plant construction (9)
- Trenching contractor (31)
